Method of making fulcrums



A. H. PEYCKE. METHOD oF MAKING ruLcuMs.

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METHOD OF MAKING FULCRUMS.

Application filed 'March 2U, `132). Serial No. 367,357.

To LZZ whom it muy concern be it known that l, ARMAND lliu lPnronn, a Citizen ot the United States, residing at Chi-- e re, in the eoumv` ot @ook and State ot illinois, have iiivented certain new and usetul improvements in Methods ot Making Fuiorums, oit which the tollowing is a specioation.

rthis invention relates `to a method oi' suijiplied, around which molten metal is pom-ed :for forming the strut;

Figure 2 is a seetional view of the same arrangement taken at right angles to that shown in Figure 1;

-bigures 3 and i are sectional views taken in the planes oi; lines 3-3 and 1i-41 ot Fig `ure 2; 4

Figure 5 is the lever supporting` member which aots as a `oore` in my method, and 'which may be formed by forging or casting; and i Figures 6 and 7 are different plan views ot the completed ralorum.

The various novel features ot the invention will be apparent from the following description and drawings, and will be partioulsrlyT pointed out in the appended claim. Referring first to Figure 5, it will be noted that i have shown a blank or lever supportingmember l0, having a slot 11 tor the reception of the brake lever, the ends of the member 10 being provided With trunnions 12 and 13, whereby the lever supporting member 10 may be rotated in the strut ifiroper for making the -fulorum reversible. The trunnion members 12 and 13 are provided with hollow portions 14 and 15 respectively; and the trunnion portion 13 is pro vided With a keyvvay 16 tor locking the rotatable lever supporting member 10 in op erative position.

fitter the blank or lever supporting member 1 0 is termed, either by casting or torgling as mentioned liiereinabove, the surfaces oit said lever supporting member 10 are coated with shellae or any other n'laterial which ttorms a good parting medium, or which prevents adhesion ot molten metal. 'lhis lever supporting member 10 is then placed Within a drag 1T and cope 18 with the associated cores set in place. its a inatter oi? fact, the lever supporting member l() acts as a core itself. A hey core 19 is inserted in the trunnion end 13 of the member 1') and is associated with a oore 20, by means oi which a band 21 is formed for the reception oi the `compression member of the brake beam. Another core 22 entends through transverse openings 28 in the lever supporting member 10 to prevent the said pivot pin openings from being iilled With metal. rlihe remaining core 24; is placed Within the trunnion 12. i l

fitter all ot the surfaces of the Cores are properly treated with the parting medium, the molten metal is poured into the` mold for forming the strut 25 around the lever supporting member LO, enoasing same, the oom- `pleted ifulorum being shown in Figures G and 7. lft will be understood that after the fulcrun'i is completely formed, the sand eores 19, 20, 22 and 24: will be toroed awa-y from the metal parts.

fis shown in Figures 6 and 7, the strut is provided with. a seat 26 to receive the tension rod ot the brake beam, and With a banded portion 21 to receive the compression member ot the brake beam. A key 27 is provided for holding the lever supqgiorting member 10 in operative position. The openings 28 formed in the sides of the strut are for the passage ot the pin which pivotallvconnects the brake lever and the lever support-` ing` member 10. The pin 'forms no part this invention, but it may be stated that it is held in place Within the leversupporting member' 1() by any suitable Cotter, of which the head and leg extremities are received in grooves 29 and 30 in the member 10. i it is myV intention to cover all modica tions ot' the invention falling Within the spirit `and scope ot the `ollovving claim.

I claim:

The method of making a 'fulcrum member of fthe kind in which ai, brake lever supporting member is revoiubiy encased within a strut, which iuehod consists in mounting Said brake lever SHQ/porting' member in :L meid, mounting removable cores upon said brake lever Lippert-ing member whereby said brake lever supporting member and Merise@ cores provide 21v compound core, pouring memi around, said Compound core to form n strut, and removing said removable ores to l0 provide zipertui'eg for Said foie-rum.

Signed at Chicago, Iliinois, this 27th luy of February, 1920.

ARMAND H. PEYGKE. 

